var Weixin = document.getElementsByClassName('Weixin-logo')[0];
var Erweima = document.getElementsByClassName('Weixin-ma')[0];
var Shouji = document.getElementsByClassName('Shouji-logo')[0];
var Erweima_2 = document.getElementsByClassName('Shouji-ma')[0];

Weixin.onmouseover = function()
{
    Erweima.style.display = "block";
}
Weixin.onmouseout = function()
{
    Erweima.style.display = "none";
}

Shouji.onmouseover = function()
{
    Erweima_2.style.display = "block";
}
Shouji.onmouseout = function()
{
    Erweima_2.style.display = "none";
}
